Question

Metals bond with halogens to form colorless metal halides. During an experiment, bromine water was added to a solution of potassium iodide. A record of the experiment is shown.

Experimental Record
Reactants Color of Reactants Color of Reactants after Mixing
Br2 Light orange solution Deep brown colored solution is formed
KI Colorless solution

Which of the following conclusions can be made about this chemical reaction based on the data?

Iodine is more reactive than bromine.
Potassium iodide and bromine do not react.
Potassium metal is formed from a single replacement reaction.
Iodine is deep brown in color and is formed from a single replacement reaction.

Answer 1

The color change observed in the experiment suggests that iodine is more reactive than bromine.

Step-by-step explanation:

The color change observed in the experiment indicates that a chemical reaction took place between bromine and potassium iodide. Bromine water, which is a light orange solution, turned into a deep brown solution when mixed with the colorless potassium iodide solution. This color change suggests the formation of brown iodine as a product of the reaction. Therefore, the correct conclusion based on the data is that iodine is more reactive than bromine.